diff --git a/backend/docs/docs.go b/backend/docs/docs.go
index dc185a2..92247c0 100644
--- a/backend/docs/docs.go
+++ b/backend/docs/docs.go
@@ -453,7 +453,8 @@ const docTemplate = `{
                 },
                 "passportExpiry": {
                     "type": "string",
-                    "format": "date-time"
+                    "format": "date-time",
+                    "example": "2022-01-01T00:00:00.000+08:00"
                 },
                 "timeCode": {
                     "type": "string",
@@ -461,7 +462,8 @@ const docTemplate = `{
                 },
                 "travelDate": {
                     "type": "string",
-                    "format": "date-time"
+                    "format": "date-time",
+                    "example": "2022-01-01T00:00:00.000+08:00"
                 }
             }
         },
@@ -494,7 +496,8 @@ const docTemplate = `{
                 },
                 "passportExpiry": {
                     "type": "string",
-                    "format": "date-time"
+                    "format": "date-time",
+                    "example": "2022-01-01T00:00:00.000+08:00"
                 },
                 "status": {
                     "type": "string"
@@ -505,7 +508,8 @@ const docTemplate = `{
                 },
                 "travelDate": {
                     "type": "string",
-                    "format": "date-time"
+                    "format": "date-time",
+                    "example": "2022-01-01T00:00:00.000+08:00"
                 }
             }
         },
diff --git a/backend/docs/swagger.json b/backend/docs/swagger.json
index 554d824..68409d0 100644
--- a/backend/docs/swagger.json
+++ b/backend/docs/swagger.json
@@ -445,7 +445,8 @@
                 },
                 "passportExpiry": {
                     "type": "string",
-                    "format": "date-time"
+                    "format": "date-time",
+                    "example": "2022-01-01T00:00:00.000+08:00"
                 },
                 "timeCode": {
                     "type": "string",
@@ -453,7 +454,8 @@
                 },
                 "travelDate": {
                     "type": "string",
-                    "format": "date-time"
+                    "format": "date-time",
+                    "example": "2022-01-01T00:00:00.000+08:00"
                 }
             }
         },
@@ -486,7 +488,8 @@
                 },
                 "passportExpiry": {
                     "type": "string",
-                    "format": "date-time"
+                    "format": "date-time",
+                    "example": "2022-01-01T00:00:00.000+08:00"
                 },
                 "status": {
                     "type": "string"
@@ -497,7 +500,8 @@
                 },
                 "travelDate": {
                     "type": "string",
-                    "format": "date-time"
+                    "format": "date-time",
+                    "example": "2022-01-01T00:00:00.000+08:00"
                 }
             }
         },
diff --git a/backend/docs/swagger.yaml b/backend/docs/swagger.yaml
index 4722353..c8dbc9b 100644
--- a/backend/docs/swagger.yaml
+++ b/backend/docs/swagger.yaml
@@ -37,12 +37,14 @@ definitions:
       passport:
         type: string
       passportExpiry:
+        example: "2022-01-01T00:00:00.000+08:00"
         format: date-time
         type: string
       timeCode:
         example: "1300"
         type: string
       travelDate:
+        example: "2022-01-01T00:00:00.000+08:00"
         format: date-time
         type: string
     required:
@@ -72,6 +74,7 @@ definitions:
       passport:
         type: string
       passportExpiry:
+        example: "2022-01-01T00:00:00.000+08:00"
         format: date-time
         type: string
       status:
@@ -80,6 +83,7 @@ definitions:
         example: "1300"
         type: string
       travelDate:
+        example: "2022-01-01T00:00:00.000+08:00"
         format: date-time
         type: string
     required:
diff --git a/backend/internal/ktmtrainbot/bookingmodel.go b/backend/internal/ktmtrainbot/bookingmodel.go
index 38a8328..206d89c 100644
--- a/backend/internal/ktmtrainbot/bookingmodel.go
+++ b/backend/internal/ktmtrainbot/bookingmodel.go
@@ -28,24 +28,24 @@ type Booking struct {
 }
 
 type BookingCreateRequest struct {
-	TravelDate     time.Time `json:"travelDate" validate:"required" swaggertype:"string" format:"date-time"`
+	TravelDate     time.Time `json:"travelDate" validate:"required" swaggertype:"string" format:"date-time" example:"2022-01-01T00:00:00.000+08:00"`
 	TimeCode       string    `json:"timeCode" validate:"required,number,len=4" swaggertype:"string" example:"1300"`
 	Name           string    `json:"name" validate:"required"`
 	Gender         string    `json:"gender" validate:"required,len=1,containsany=MF" swaggertype:"string" example:"M" enum:"M,F"`
 	Passport       string    `json:"passport" validate:"required"`
-	PassportExpiry time.Time `json:"passportExpiry" validate:"required" swaggertype:"string" format:"date-time"`
+	PassportExpiry time.Time `json:"passportExpiry" validate:"required" swaggertype:"string" format:"date-time" example:"2022-01-01T00:00:00.000+08:00"`
 	Contact        string    `json:"contact" validate:"required,e164" swaggertype:"string" example:"+6512345678"`
 	BackToSg       bool      `json:"backToSg" swaggertype:"boolean" example:"false"`
 }
 
 type BookingResponse struct {
 	ID             uuid.UUID `json:"id"`
-	TravelDate     time.Time `json:"travelDate" swaggertype:"string" format:"date-time"`
+	TravelDate     time.Time `json:"travelDate" swaggertype:"string" format:"date-time" example:"2022-01-01T00:00:00.000+08:00"`
 	TimeCode       string    `json:"timeCode" swaggertype:"string" example:"1300"`
 	Name           string    `json:"name"`
 	Gender         string    `json:"gender" swaggertype:"string" example:"M" enum:"M,F"`
 	Passport       string    `json:"passport"`
-	PassportExpiry time.Time `json:"passportExpiry" swaggertype:"string" format:"date-time"`
+	PassportExpiry time.Time `json:"passportExpiry" swaggertype:"string" format:"date-time" example:"2022-01-01T00:00:00.000+08:00"`
 	Contact        string    `json:"contact" swaggertype:"string" example:"+6512345678"`
 	Status         string    `json:"status"`
 	BackToSg       bool      `json:"backToSg" validate:"required" example:"false"`